Digital Thermometer and Thermostat

±2.0°C Accurate Digital Temperature Sensor Operates From a Supply of Only 1.7V to 3.7V

Please check latest availability status for a specific part variant.


The DS75LV low-voltage (1.7V to 3.7V) digital thermometer and thermostat provides 9-, 10-, 11-, or 12-bit digital temperature readings over a -55°C to +125°C range with ±2°C accuracy over a -25°C to +100°C range. At power-up, the DS75LV defaults to 9-bit resolution for software compatibility with the LM75. Communication with the DS75LV is achieved through a simple 2-wire serial interface.

The DS75LV thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S is activated. There are two thermostatic operating modes that control thermostat operation based on user-defined trip-points (TOS and THYST).

DS75LV: Functional Block Diagram DS75LV: Functional Block Diagram Enlarge+

Key Features

  • Extend Performance Range with Low-Voltage, 1.7V to 3.7V Operating Range
  • Maximize System Accuracy in Broad Range of Thermal Management Applications
    • Measures Temperature from -55°C to +125°C (-67°F to +257°F)
    • ±2°C Accuracy over a -25°C to 100°C Range
    • User-Configurable Resolution from 9 Bits (Default) to 12 Bits (0.5°C to 0.0625°C)
  • Easy Upgrade to LM75: Pin and Software Compatible
  • Simplify Distributed Temperature-Sensing Applications with Multidrop Capability
    • Up to Eight DS75LVs Can Operate on 2-Wire Bus
  • Increase Reliability and System Robustness
    • Internally Filtered Data Lines for Noise Immunity (50ns Deglitch)
    • Bus Timeout Feature Prevents Lockup on 2-Wire Interface
  • Minimize Power Consumption with Built-In Shutdown Mode
  • Flexible User-Defined Thermostatic Modes with Programmable Fault Tolerance


  • Any Thermally Sensitive System
  • Cellular Base Stations
  • Office Equipment
  • Personal Computers

See parametric specs for Temperature Sensors (113)

Part NumberSensor TypeInterfaceChannelsAccuracy
Parasite Pwr.Temp. Thresh.Temp. Resolution
Multi DroppableOper. Temp.
See Notes
DS75LV Local2-Wire/I2C/SMBusOne2NoProgrammable
Yes-55 to +125
SOIC (N)/8
$1.05 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: DS75LV.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >


Related Resources

Complete Optical Biosensing Module with Ultra-Low-Power Biometric Sensor Hub

  • Complete Biometric Sensor Hub
  • World-Class Algorithm for Wearable Applications

±0.25°C Accurate I2C Temperature Sensor

  • High Accuracy
  • Long Battery Life
  • Small Size

1-Wire® Temperature Sensor with ±1ºC Accuracy

  • 1-Wire Interface Requires Only One Port Pin for Communication
  • Unique 64-bit Serial Code Stored in an On-Board ROM
  • External Resistor Selects Address for Location Identification

Integrated Optical Sensor Module for Mobile Health

  • Miniature 3.5mm x 7.0mm x 1.5mm, 14-Pin Optical Module
  • Optical-Grade Glass for Long-Term Optimal and Robust Performance
  • Ultra-Low-Power Operation for Mobile Device